Quote Originally Posted by Gwylan View Post
I've lost count of the number of shots I've put through my S400s. If you have to replace them every 2 tins, there's something wrong. OP, are you sure it's the breech seal? The transfer port Oring seal can leak from around the same area, and it's easily misplaced, or even lost, when you do a rebuild.

Gus
I replaced TP with a new seal as well. Incidentally, there is a brass washer that I assume sits inside the TP seal. Can't locate this on the parts diagram so would appreciate confirmation.

Pretty sure TP seal went back as it should. Leak is coming from the breach, I feel the puff of air on my face when shoting. But I take note of your suggestion.

It'll get another strip shortly so I'll check it out. Thanks

S